Codeigniter活動記錄中的多個Select Count SQL查詢

Question

我喜歡將以下MySQL查詢轉換為Codeigniter Active Record查詢。

以下是MySQL：

select brand_id,name,(select count(*) from items where brand_id = b.brand_id) as itemc, (select count(*) from models where brand_id = b.brand_id) as modelc from brands as b

Codeigniter：

$this->db->limit($perpage,$page);
    $query = 'select brand_id,name,(select count(*) from items where brand_id = b.brand_id) as itemc, (select count(*) from models where brand_id = b.brand_id) as modelc from brands as b limit '.$perpage.' offset '.$page.'';
    $query = $this->db->query($query);
    $query = $query->result();
    return $query;

請幫助我將上面的代碼轉換為Codeigniter Active Record。

Answer 1

這是活動記錄中的查詢

 $rows =   $this->db->select('b.brand_id,b.name')
    ->select('(select count(*) from items where brand_id = b.brand_id) as itemc',FALSE)
    ->select('(select count(*) from models where brand_id = b.brand_id) as modelc',FALSE)
    ->from('brands as b')
    ->limit($perpage,$page)->get()->result();